Dishwashing machine



' 1,639,834 Aug. 23, 1927. G. P. ANSTISS DISHWASHING MACHINE Filed May 2. 1925 Patented Aug. 23, 192 7.

UNlTED STATES PATENT OFFICE.

GEORGE P. ANSTISS, OF OAK PARK, ELINOIS, ASSIGNOR TO G. S. BLAKESLEE -& OO.,

OF OIOERO, ILLINOIS, A CORPORATION OF ILLINOIS.

' msnwnsnme MACHINE.

v Application filed Kay 2,

My invention relates to machines for washing dishes, and particularly to those designed for use in restaurants and other places where large numbers of dishes are used. It has for its object to provide certain improvements in dish washing machines of'the type comprising a tank adapted to contain wash water, and means for throw ing water from the tank upon the dishes to be washed while they are contained in a basket or other receptacle which is moved through the machine over the water in the tank. Such improvements have particularly to do with keeping the wash water comparatively 'clean by preventing its contamination through the deposit therein of refuse from the dishes to be washed. In restaurants, hotels, &c., the dishes to be washed are usually deposited on a stationary tray or' table arranged adjacent to thewashing machine proper, where they are placed in the baskets, the baskets being then moved into the machine on tracks or other supports arranged to support the baskets while the dishes are being washed, and more or less of the refuse matter from the dishes talls on such tray or table and is apt to be carried into the washing machine, especially as the tray usually is arranged to drain into the tank. This causes the water to become foul much sooner than it otherwise would, and, therefore, it must be changed more frequently, and even if changed at short intervals it is not as effective in cleansing the dishes as it should be.

The improvement which forms the'subject-matter of this invention has to do with overcoming this difliculty by means which will presently be described.

In the accompanying drawings,

Fig. 1 is an end elevation of part of a dish washing machine of the type to which my invention relates; the tray or table on 'wlich the dishes are deposited being omitte Fig. 2 is a partial longitudinal vertical section on line 2-2 of Fi 3; and

Fig. 3 is a partial horlzontal section on line 33 of Fig. 2.

In the drawings, in which I have shown only so much of a dish washing machine as is necessary to a full understanding of my invention, 4 indicates a tank adapted to contain wash water, which tank forms the lower part of the machine and is provided 'provided with flanges 16, 17 at its sides to prevent the escape of water laterally. Said 1925. Serial N0. 27,421.

with a housing 5 which extends "over the washing compartment.- Usually such machines are provided with washing and rinsing compartments through which the dishes are conducted, the washing compartment being adjacent to the inletend of the machine and the rinsing compartment adjacent to the outlet end thereof, but I have shown only the washing compartment as my present invention is hot concerned with the rinsing compartment. Extending longitudinally of the washing and rinsing compartments over the, water therein are rails 6 on which the baskets rest as they are moved along through the machine, and adjacent to the inlet end of the machine is an endless belt 7 driven in any suitable way, which operates to advance the baskets along the rails 6. The belt 7 is shown as being mounted on sprocket wheels 8, .9'carried by shafts 10, 11, respectively, one of which shafts, in the .present instance the shaft 10, being extended outside the tank so that it may be driven through gear.- ing or other driving connections from any suitable source of power. The tank 4 is provided with an overflow pipe 12 that opens thereinto at the height to which the water is supposed to stand in the tank, said pipe being provided with a connecting pipe 13 leading to the sewer.

Arranged adjacent to the inlet end 14: of the machine is a tray or table 15 on which the dishes to be washed are placed preparatory to their being placed in the baskets, and which also supports the baskets before they are introduced into the machine. This table may be of any suitable shape and dimensions, and is preferably made of metal table is arranged approximately on the same level as the rails 6 and slopes downward to ward the inlet end of the machine where it is provided with a depending flange 18 that is adapted tov hook over the'oilter wall 19 of a trough 20 which extends across the inlet end of. the machine below -t-e opening thereinto, and next to the front "wall 21 of the tank 4, the inner wall 22 of said trough being fitted against the wall 21 and having a lip or flange 23 which overlies the u%p er margin-of the wall 21, as best shown in 1g.

7 The trough 20 approximately corresponds in width to the width of the table 110 15 and of the inlet opening 14 of the washing machine, and it is open at the top, as shown in Fig. 2. The bottom 24 of said trough is V-shaped, and its apex connects with a pipe 25 which leads to the pipe 13.

By this arrangement it will be apparent that any refuse matter deposited on the table 15 cannot be swept int-o the tank 4, as the trough 20 is interposed between the inner margin of said table and the front wall 21 of the tank. 011 the contrary, such refuse matter will drop. into the trough 20 and be discharged to the sewer through pipes 25 and 133. tank 4.- is kept clear of solid particles and other impurities that fall or are removed fronrthe dishesbefore they are introduced into the washing machine, and consequently it is unnecessary to change the water at such frequent intervals as has been necessary in the use of washing machines of this type as heretofore coi'ist-ructed.

It will be noted that the overflow pipe 12 is located at oneside of the tank, thereby permitting the trough 20 to be placed across the front end of the tank in the manner above'described. By causing the inner margin of the table to overlap the outer wall 19 of the trough 2O liquid matter may be swept into the trough without leaking down along the outside of the wall 19, and in like manner the lip or flange 23 prevents leakage of liquid between the inner wall 22 of the trough and the front wall 21 of the tank. This arrangement also facilitates removal of the trough and table when necessary, since the table may be lifted out of engagement with the trough and the trough may be lifted out of engagement with the washing machine. Preferably the trough is secured to the housing 5 of the washing machine by bolts 26, '27, which may, however, be easily removed when necessary.

What I claim as my invention and desire to secure by Letters Patent, is

1. A washing'machine comprising a tank for wash water, means extending over said tank for supporting the articles to be washed, means extending across the front wall of the tank adjacent to the article-receiving opening thereof and arranged to receive loose refuse matter for preventing such refuse By this means the water in the matter from passing into the water in the tank, and an overflow pipe communicating with the tank at one side thereof, said last named means communicating with said overflow pipe.

2. A dish washing machine comprising a tank for wash water, a table on which the dishes are piled or placed in baskets preparatory to being moved into said washing tank, and a trough interposed between said table and the dish inlet opening of said washing tank, said trough receiving refuse matter moving along said table toward said washing tank and .thereby preventing said refuse matter from entering said tank and commingling with the wash water therein.

3. A washing machine comprising a tank for wash water, means extending over said tank for supporting the articles to be washed, a table adjacent to the inlet end of the machine for supporting the articles t-o-be washed, and a trough fixedly secured between said table and the article receiving end of the machine for receiving refuse matter from said table.

4. A washing machine comprising a tank for wash water, means extending over said tank for supporting the articles to be washed, a table adjacent to the inlet end of the machine for supporting the articles to bewashed, and a trough fixedly secured between said table and the article receiving end of the machine for-receiving refuse matter from said table, said trough having an outer wall overlapped by the inner margin of said table. and an inner wall overlapping the front wall of the tank, and a drain pipe connected with said trough.

5. A dish washing machine comprising a tank adapted to contain wash water, said tank having an inlet opening, conveyor means in said tank for receiving the dishes entering through said inlet opening. a table on which the dishes are piled or placed in baskets located adjacent to said inlet opening, and a trough interposed between said table and said inlet opening for receiving refuse matter from said dishes and from said table prior to the dishes being placed upon said conveyor.

GEORGE P. ANSTISS. 

